Does Local File Transfer Use Your Internet Data?
Learn whether local Wi-Fi and peer-to-peer file sharing consumes your monthly broadband data cap or mobile cellular plan allowance.
No, local peer-to-peer file transfer does not consume your broadband data cap or mobile cellular data allowance. When devices transfer data over the same Wi-Fi network, files travel directly between your hardware inside your local network.
How internet data consumption works
Internet service providers (ISPs) meter the data that traverses the WAN (Wide Area Network) port on your modem. When you stream video on Netflix, upload a folder to Google Drive, or browse social media, packets cross the modem and count against your monthly data allowance.
With local WebRTC file transfer on iFileSender, only a tiny signaling exchange (less than 10 kilobytes of text to exchange network addresses) passes through the internet. Once the peer-to-peer handshake completes, the entire file transfer takes place locally across your router's internal switch.
Comparing data usage: Cloud vs Local P2P
- Uploading 10 GB to Google Drive: Consumes 10 GB of upload bandwidth plus 10 GB of download bandwidth on the receiving device (Total: 20 GB counted against your internet quota).
- Transferring 10 GB via iFileSender: Consumes approximately 0.00001 GB (a few kilobytes) of internet data for signaling, while the 10 GB payload travels strictly through local Wi-Fi.
Frequently asked questions
Can my ISP see what files I am transferring locally?
No. Because local data packets never leave your internal router network and are encrypted with DTLS, your internet provider cannot view or inspect your transferred files.
Free Local P2P File Transfer Tool
Pair your devices in 3 seconds to share photos, videos, and large files directly over local Wi-Fi.